build: upgrade to C++23

Meson 1.1.1 and GCC-13 both support C++23 and a sufficient portion of
the standard has been implemented. Upgrade the build to leverage it.

Change-Id: Ibb8913a93032d388399b6

build: upgrade to C++23

Meson 1.1.1 and GCC-13 both support C++23 and a sufficient portion of
the standard has been implemented. Upgrade the build to leverage it.

Change-Id: Ibb8913a93032d388399b65904013e284780dad70
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>

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Adding google license header to source files

This was done automatically using this script:

https://github.com/google/addlicense

```
go get -u github.com/google/addlicense
$HOME/go/bin/addlicense

Adding google license header to source files

This was done automatically using this script:

https://github.com/google/addlicense

```
go get -u github.com/google/addlicense
$HOME/go/bin/addlicense -c "Google LLC" -l apache .
```

Manually added the license headers to meson.build files as well

Signed-off-by: Brandon Kim <brandonkim@google.com>
Change-Id: I7a17364912c8af2317a1d47a4222f7b3bdc5dc98

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ncsid: Import from gBMC

This is the initial code drop from gBMC.

Google-Bug-Id: 179618516
Upstream: 1e71af914bc8c54d8b91d0a1cf377e2696713c2f
Change-Id: Ic653e8271dacd205e04f2bc713071ef2ec5936a4
Sig

ncsid: Import from gBMC

This is the initial code drop from gBMC.

Google-Bug-Id: 179618516
Upstream: 1e71af914bc8c54d8b91d0a1cf377e2696713c2f
Change-Id: Ic653e8271dacd205e04f2bc713071ef2ec5936a4
Signed-off-by: William A. Kennington III <wak@google.com>

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